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test_rfc3339.c
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test_rfc3339.c
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#include "rfc3339.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/// @see rfc3339_local_date_time_now
/// @see rfc3339_date_time_now
int gettimeofday(struct timeval *restrict tp, void *restrict tzp)
{
assert(tp != NULL);
assert(tzp == NULL);
tp->tv_sec = 1661362020; // 2022-08-24T17:27:00.000048Z
tp->tv_usec = 48;
return 0;
}
int main(void)
{
struct timeval tv;
struct tm *local;
struct tm *utc;
tv.tv_sec = 851042397; // 1996-12-20T00:39:57Z
tv.tv_usec = 0;
setenv("TZ", "America/Los_Angeles", 1);
local = localtime(&tv.tv_sec);
// RFC3339 §5.8 1996-12-19T16:39:57-08:00
assert(!strcmp("1996-12-19T16:39:57.000001-08:00", rfc3339_local_date_time(local, 1)));
utc = gmtime(&tv.tv_sec);
assert(!strcmp("1996-12-20T00:39:57.000002Z", rfc3339_date_time(utc, 2)));
setenv("TZ", "UTC", 1);
assert(!strcmp("2022-08-24T17:27:00.000048+00:00", rfc3339_local_date_time_now()));
assert(!strcmp("2022-08-24T17:27:00.000048Z", rfc3339_date_time_now()));
setenv("TZ", "Europe/Helsinki", 1);
assert(!strcmp("2022-08-24T20:27:00.000048+03:00", rfc3339_local_date_time_now()));
assert(!strcmp("2022-08-24T17:27:00.000048Z", rfc3339_date_time_now()));
}